. >> reporter: this morning john boehner floated another idea: draft current speaker paul ryan. his spokeswoman shot that down quickly saying, he will not accept a nomination. and republican national committee chairman reince theibus told us there won't be a need for a new candidate. >> there isn't going to be some sort of game played where someone goes into the convention with a majority of the delegates and somehow or another that person is not the nominee. i don't see that happening. >> reporter: but delegates are only bound to their candidates for the first ballot, and owlebus acknowledged the party can rewrite the convention rules at its discretion. >> i would imagine the nomination rules would have to be looked at. because obviously, you'd have second and third ballot-type rules that you wouldn't have contemplated in the last convention. contemplated in the last race was headed for a prime time debate monday, but trump and kasich pulled out, forcing its cancellation. scott, that debate was to occur the night before a contest in utah and arizona with 98 delegates at stake.